Warper beam



June 4, EMU R THORNTON 2,203,584

WARP ER BEAM Filed June 17, 1939 3 Sheets-Sheet 1 AT TURN EL:

June 4, 1940. R. u. THORNTON WARPER BEAM Filed June 17, 1959 sSheets-Sheen 2 June 4, 1940. R. u. THORNTON WARPER BEAM FiledJune 17,1939 3 Sheets-Sheet 5 Patented June 4, 1940 UNITED STATE 5 Claims.

in the use of warper beams of the type shown in myPatent No. 2,148,394,February 21, 1939, wherein the side face of each of the barrel staves isprovided with a longitudinally extending groove for receiving rodswhereby the beam heads and barrel are held together and the screws whichattach the staves to the discs or inner heads are all in alignment withthe central longitudinal axis of the stave, there is a tendency for theouter edges of the staves to rise slightly after the yarn, especiallyrayon or other heavy yarn, carried by the beam has been unwound.

It has been found. also that in beams which carry heavy yarn, such asrayon, there is a tendency for some of the end portions of the staves,each of which is secured by a. single screw to the two end discs, tobecome loosened on account of the different screw-holding power of thevari ous peripheral portions of the discs, such holding power varyingwith the relative positions of the screws and the grain or the wood ofwhich the discs are formed.

Because of the behavior above recited of the beams it frequently wasnecessary, after a period of use, to re-turn the barrel in order torestore it to its original smoothcylindrical contour.

The object of the present inventionis to provide a warper or sectionbeam whereby the fore going limitations are eliminated.

With this object in view, my invention comprises a beam each stave ofwhich has a longitudinally extending groove on its under sidesubstantially midway between its side faces, some of said grooves, forexample, every alternate groove, receiving metallic rods the ends ofwhich pass into or through the beam heads and cooperate with meanswhereby theyare suitably tensioned to secure the heads and the barreltogether; and screws .or other holclfast means staggeredwith respect tosaid grooves and engaging the discs.

My invention comprises also means whereby the difierence inscrew-holding power of the several peripheral portions of the discs isequalized, apreferred means being the provision of discs of cross bandedwood having at least two layers,

the grain of the bands of. one layer havingdirections different from thegrain of the contiguous bands of the other; together with at least twoscrews or other holdfast means passing through each stave near therespectiveends thereof and into two contiguous bands of said discs,respectively, the said screws having differing relative positions withthe grain of the wood of said bands, .for example, one being, across thegrain of one of said bands, and the other in line with the grain of thecontiguous band or else making an, angle therewith that is less than Inthe drawings which accompany and form a part of this specification,Figure 1 is a iragmentary longitudinal section of the end portion of abeam embodying my invention, the plane of the section being indicated.by the. line l--l of Figs. 3 or 4.

Fig. 2 is a longitudinal section .on a smaller scale of said beam. i

Fig. 3 is a transverse section taken substantially on the line 3-3 ofFig. 1. s

Fig. 4 is a section taken substantially on the line 4-4 of Fig. 1.

Fig. 5 is an edge view of one of the discs or inner heads as seen fromthe left-hand side of beam comprisinga barrel ii, heads .52, said heads,being mounted on the shaft is, and discs or inside heads, M, the numberof which depends upon the length of the beam and the character of theyarn carried thereby. The barrel is formed by securing a series ofstaves l5 (designated a to 7', inclusive, in Figs. 3 and 4) to the discsby suitable holdiast means, such as screws, and the discs are held onthe shaft by any suitable means, such as the flanged collars it attachedto the discs by screws H and to the shaft by the set screws ifi.

Passing through grooves is formed in the under side of each stavesubstantially midway. between the side faces thereof, are metallic rods2!], the ends of which project part way through theheads l2 and arethreaded to receive the nuts H whereby said heads are drawn. against theends of the barrel.

As shown in Figs. 3 and i, one sideface of each stave is provided with alongitudinally extending groove 22 for receiving the tongue 23 of theadjacent stave. In thepresent instance,..the rods 263 are shown asdisposed in the grooves! of alternate staves.

- In thecas'e of beams of the longer type and on which rayon and otherheavy yarns are wound,

it is customary to employ as many as nine discs or. inner heads, and inFig. 6, which is. diagrammatic in character, there are shown two stavesi5, 15, attached to the peripheries of nine discs.

Itwill be noted that the screws 24 which pass of the right-hand layer ofthe disc.

through each stave and into the inner heads 25, herein shown as seven innumber, are staggered with respect to the groove IQ of such stave. Bythis arrangement a substantial improvement is effected in that thecontour of the barrel is maintained and the re-turning of the same afterits use with rayon is rendered unnecessary. It would seem that thedisposition of the longitudinal grooves IS in the substantial centre ofthe under side of the staves increases somewhat the resiliency of thestaves whereby a closer contact thereof with the discs is renderedpossible than in the case of the beam of my prior patent aforesaid,especially where the screws 24 of the intermediate discs are staggeredwith respect to the groove. By virtue of the tongue and grooveconnection between contiguous staves, it has been found unnecessary touse two screws for attaching a stave to any one disc, for example, thescrew 26, whereby the stave I5 is attached to one of the inner heads,operates through the tongue and groove connection of the two staves insuch manner that the portion of the stave l5 that abuts the stave I5 isheld to the disc as securely as it would be if a second screw werepassed .through the stave l5 and into the disc at the point indicated indotted lines at 24'.

The cause of contour distortion at the ends of a beam, whetherrelatively long and used for heavy yarn, (Fig. 6) relatively long andused for lighter yarn, as shown in Fig. '7, or relatively short, isremoved by equalizing the screw-holding power of the several peripheralportions of the discs in the following manner.

Each disc is formed of a plurality of layers of cross banded wood, gluedtogether, two such layers being shown in the present instance, the

grain of the bands on one layer having directions different from that ofthe contiguous bands of the other. Referring to Figs. 3 and 5, the bandsof the right-hand layer are indicated at A, B, and C; the band A beingshown as semicircular; the band C as a segment of a circle; and theintermediate band B having parallel sides and arcuate ends. Preferablythe meeting edges of. adjacent bands are provided with tongue and grooveconnections 21. Referring to Fig. 4, which shows the face of the discopposite to that appearing in Fig. 3, it 'will be noted that the bandsE, D, and F, are respectively at right angles to the bands A, B, and CThe dividing lines 28, 29, of the bands of the right-hand layer (Fig. 3)appear as dotted lines in Fig. 4, and the dividing lines 30, 3!, of thebands of the left-hand layer (Fig. 4) are shown as dotted lines in Fig.3.

The two end discs 32, 32, (Fig. 6) are constructed in the manner above,described and if 1 desired the spaced inner discs 25 also may be andpreferably are so formed. As indicated in Figs. 3 and 4, the grain ofthe bands A, B, and C, have directions different from the grain. of thecontiguous bands E, D, and F. As the screw or nail holding power of woodvaries with the relative position of such holdfast means and the grainof the wood, I position the screws which hold the staves to the enddiscs 32,. 32, in such manner that they pass into two contiguous bandsof different layers of the discs and are disposed on opposite sides ofthe groove l9. Thus, referring to Fig. 6, it will be seen that screw 33passes into the right-hand side or layer of disc 32 on one side of thegroove [9; and that the screw 34 passes into the left-hand side or layerof said practically equalized.

disc, on the other side of said groove, and by referring to Figs. 3, 4,and 5, it will be seen that each pair of screws 33, 34,'take into thedisc at points where the angular relation of the grain of the wood withthe respective screws is different. As shown in Figs. 6 and '7, thepreferred spatial arrangement of each of the pairs of screws 33, 34, orother holdfast means, is that a line joining the membersof each saidpair makes an acute angle with the longitudinal axis of the stavethrough which they pass. While this is the preferred arrangement, myinvention is not limited thereto because an improvement is effectedwhere the members of each pair of screws are on opposite sides of thegroove I9, irrespective of said spatial relation.

Illustrating further the angular relation of the screws with respect tothe grain, it will be noted by reference to Figs. 3 and 5, that screw 33passes through stave :i into band A through hole 33 in n a directionvery nearly parallel with the grain of the wood, or at least at a verysmall angle therewith so that the power of the wood to hold the same iscomparatively small; and by reference to Figs. 3 and 5, it will be seenthat screw 34 of moved, a difficulty that I have overcome by the Iprovision of the centrally disposed grooves I9 and the staggering of thescrews with respect thereto, it has been found that'if the end portionsof the staves become slightly moistened, as

by exposure to rain, or evento an excessively humid atmosphere, therewill be a contour distortion at or near: the ends of the barrels, suchdistortion probably being due to the fact that the tightening of thescrewsv 21 and the resulting tensioning of the rods 20 subject thestaves to a very considerable longitudinalcompression. It is for thisreason particularly important to so arrange matters, as above described,that the screw holding power of the end discs 32 shall be It is to beunderstood, however, that this arrangement need not necessarily beemployed in connection with the staggering of the screws that hold thestaves to the intermediate discs, as illustrated in Fig. 6, and

it is to be understood also that a beam formed of staves havinglongitudinal grooves on their under surfaces secured to the discs byscrews or other fastening means which are staggered with respect to thegrooves is useful withoutthe above described means for equalizing thescrew holding power of the end discs. Preferably, however, both of thesearrangements are used together to secure the .best results both as tosmoother running and the prevention of contour distortion. In thisconnection, it will be understood that a section or warper beam inoperation has a very high peripheral speed of rotation and thattherefore it must be perfectly balanced. Obviously any non-uniformrising or lifting of portions of the staves will destroy the balance ofthe beam.

Having thus described an illustrative embodiment of my inventionwithout, however, 1imiting the same thereto, what I claim and desiretosecure by Letters Patent is:

1. A warper beam comprising a barrel composed of two discs located nearthe respective ends of the barrel and staves spaced around said discs,each said disc having two layers of wood, each said layer having aplurality of bands and thegrain of the bands of one layer havingdirections different from the grain of the contiguous bands of theother, and holdfast means passing through each stave near the respectiveends thereof and intotwo contiguous bands of different layers of saiddiscs, respectively, at points where the angular relation of the grainof the Wood with the respective holdfast means is different.

2. A warper beam comprising a barrel composed of two discs located nearthe respective ends of the barrel and staves spaced around said discs,each said disc having two layers of wood, each said layer having aplurality of bands and the grain of the bands of one layer beingsubstantially at right angles to the grain of the contiguous bands ofthe other, and holdfast means passing through each stave near therespective ends thereof andinto two contiguous bands of difierent layersof said discs, respectively, at points where the angular relation of thegrain of the wood with the respective holdfast means is difierent.

3. A warper beam comprising a barrel composed of two discs located nearthe respective ends of the barrel and staves spaced around said metallicrods disposed in a plurality of said grooves and passing into saidheads, and means co-operating with the ends of said rods for hold ingthe heads and barrel together.

4. AWarper beam comprising a barrel composed of two discs located nearthe respective ends of the barrel and staves spaced around said discs,each said disc having two layers of wood, each said layer having aplurality of bands and the grain of the bands of one layer havingdirections different from the grain of the contiguous bands of theother, and a pair of holdfast means passing through, each stave near therespective ends thereof and into two contiguous bands of diiferentlayers of said discs, respectively, at points where the angular relationof the grain of the wood with the respective holdfast means isdifferent, the line joining the members of each said pair of holdfastmeans making an acute angle with the longitudinal axis of the stavethrough which they pass,

5. A warper beam comprising a barrel composed of two discs located nearthe respective ends of the barrel and staves spaced around said discs,each said disc having two layers of wood, each said layer having aplurality of bands and the grain of the bands of one layer beingsubstantially at right angles to the grain of the contiguous bands ofthe other, and a pair of holdfast means passing through each stave nearthe respective ends thereof and into two, contiguous bands of differentlayers of said discs, respectively, at points where the angular relationof the grain of the Wood with the respective holdfast means isdifferent, the line joining the members of each said pair of holdfastmeans making an acute angle with the longitudinal axis of the stavethrough which they pass.

, RAY UDELL THORNTON.

